Improvement in perforating edged column-rules



10H N C WH IT E.

Perforatng Rule.

Patented March 26,1872.

JOHN C. WHITE, OF QUINOY, ILLINOIS.

Specification forming part of Letters Patent No. 124,925, dated March 26, 1872.

To all whom it may concern:

Be it known that I, JOHN G. WHITE, of the city of Quincy, in the county of Adams and State of Illinois, have invented a new and useful Improvement in Performing-Rules, of which the following is a specification, reference being had to the accompanying drawing.

N atnrc and Objects of the Invention.

Description of the Accompanying Dra/wing. Figure l is a side elevation of a device emi bodying the invention. Fig. 2 is a perspective of the same. Fig. 3 is an end view of the same when inserted between the type C.

General Description.

A in the accompanying drawing is an oblong rectangular strip or bar of sheet metal, the width of which should slightly exceed the length of 'the type in connection with which the rule is to be used. From the lower edge of this piece portions of metal of common size are removed at regular and proper intervals, forming the indentations or spaces a. Those portions of metal remainingbetween the spaces a are sharpened or drawn out to a common 'straight edge of requisite ineness, forming the teeth b'.

Operation.

When the form for printing the stub and blankis set up the perforating-rule is inserted g, with its serrated edge upward between the type making up the form of the blank and the type making up the form of the stub, the rule being forced down until its straight edge or back comes in contact with the surface supporting the type C, Fig. 3. The form may then be tightened so as to hold the type and rule rmlyin their respective positions, and may then beplaced on the press, and the operation of printingbegun. As the edges ofthe teeth?) project beyond the face of the type and are sharp ened they readily pass through the paper when the form is brought in contact therewith, thus making a line of punctures between the blank and the stub, by means of which the same can readily be torn apart without danger of tear ing either, leaving a smooth straight edge on p' each ofthe parts so severed. The projection of the teeth b beyond the surface of the face of the type is to be regulated by the kind of paper used in` printing the blank and stub. The heavier the paper the greater should be the projection, and vice versa. I do not claim a perforating-rule having pointed teeth, as shown in the device for which a patent was granted W. W. Harding, May l, 1860; but

What I do claim as my invention, and desire to secure by Letters Patent, is-

A perforating-rule, one edge of which is proA vided with the rectangular sharp straightedged teeth b, having between them the inA tervals a, whensuch rule is used in combination with a form of type, in the manner and for the purposes indicated and illustrated herein.

In testimony that I claim the foregoing im Y provement in perforatingrules, as above de scribed, I have hereunto set my hand and seal this 27th day of December, 1870.

JOHN uwnirn. [1.. s]

4Witnesses GEORGE BROPHY, GEO. H. BUGKLEY. 

